Apparatus for transmitting sound in a motor vehicle

Abstract

An apparatus for transmitting sound in a motor vehicle including a housing ( 1 ) with an inside partition ( 2 ), which together define or delimit two separate subspaces ( 3, 4 ), which in turn are separated by a transmission valve ( 6 ) which opens through the partition ( 2 ) and can pivot about a pivot axis ( 5 ). The first subspace ( 3 ) is connected to an intake manifold of an internal combustion engine, and the second subspace ( 4 ) is connected to an interior of the motor vehicle. An elastic and at least partially perforated sealing element ( 8 ) is provided in a gap ( 25 ) between a peripheral edge ( 7 ) of the transmission valve ( 6 ) and the housing ( 1 ).

1 . An apparatus for transmitting sound in a motor vehicle, comprising a housing with an inside partition, said housing and partition together defining two separate subspaces, and a transmission valve which opens through the partition and separates the two subspaces and which can pivot about a pivot axis; one of said subspaces being connected to an intake manifold of an internal combustion engine, and the other subspace being connected to an interior space of the motor vehicle in a manner capable of transmitting sound; wherein an elastic and at least partially perforated sealing element is arranged in a gap between a peripheral edge of the transmission valve and the housing.  
     
     
         2 . An apparatus according to  claim 1 , wherein perforations are provided in the sealing element in the vicinity of longitudinal edges of the transmission valve adjacent the pivot axis, and the sealing element is constructed as a continuous, gas-tight membrane in the area of its end edges extending along the longitudinal edges parallel to the pivot axis.  
     
     
         3 . An apparatus according to  claim 2 , wherein the perforations are in the form of slots.  
     
     
         4 . An apparatus according to  claim 1 , wherein perforations are provided in corner areas of the transmission valve.  
     
     
         5 . An apparatus according to  claim 4 , wherein the corner areas are rounded.  
     
     
         6 . An apparatus according to  claim 4 , wherein the perforations are in the form of slots.  
     
     
         7 . An apparatus according to  claim 1 , wherein the sealing element is constructed as a continuous membrane having an elastically deformable crimp in an area inward of the perforations.  
     
     
         8 . An apparatus according to  claim 1 , wherein a residual peripheral gap is formed along the peripheral edge of the transmission valve.  
     
     
         9 . An apparatus according to  claim 1 , wherein the longitudinal edges of the transmission valve are pivotably mounted by two elastically rotatable axle journals in the area of the pivot axis.  
     
     
         10 . An apparatus according to  claim 9 , wherein the axle journals are constructed in one piece with the sealing element.  
     
     
         11 . An apparatus according to  claim 9 , wherein the transmission valve is held in a form-fitting manner in the axle journals.  
     
     
         12 . An apparatus according to  claim 1 , wherein the transmission valve has a web extending along the pivot axis of the transmission valve, and an elastic sealing strip rests against said web such that the sealing strip is situated between the transmission valve and the partition.  
     
     
         13 . An apparatus according to  claim 12 , wherein said web is disposed between the axle journals and together with the axle journals forms a continuous axle element.